only use in postgres

Author: achristmascarl

src/dialect/mod.rs

@@ -1036,7 +1036,7 @@ pub trait Dialect: Debug + Any {
     /// Returns true if the dialect supports `ADD <table_constraint> [NOT VALID]` in `ALTER TABLE` statements.
     ///
     /// -[PostgreSQL](https://www.postgresql.org/docs/17/sql-altertable.html)
-    fn supports_constraint_not_validation(&self) -> bool {
+    fn supports_constraint_not_valid(&self) -> bool {
         false
     }
 

src/dialect/postgresql.rs

@@ -259,7 +259,7 @@ impl Dialect for PostgreSqlDialect {
         true
     }
 
-    fn supports_constraint_not_validation(&self) -> bool {
+    fn supports_constraint_not_valid(&self) -> bool {
         true
     }
 

src/parser/mod.rs

@@ -8477,7 +8477,10 @@ impl<'a> Parser<'a> {
     pub fn parse_alter_table_operation(&mut self) -> Result<AlterTableOperation, ParserError> {
         let operation = if self.parse_keyword(Keyword::ADD) {
             if let Some(constraint) = self.parse_optional_table_constraint()? {
-                let not_valid = self.parse_keywords(&[Keyword::NOT, Keyword::VALID]);
+                let mut not_valid = false;
+                if self.dialect.supports_constraint_not_valid() {
+                    not_valid = self.parse_keywords(&[Keyword::NOT, Keyword::VALID]);
+                }
                 AlterTableOperation::AddConstraint {
                     constraint,
                     not_valid,

tests/sqlparser_postgres.rs

@@ -6236,7 +6236,7 @@ fn parse_ts_datatypes() {
 
 #[test]
 fn parse_alter_table_constraint_not_valid() {
-    match pg_and_generic().verified_stmt(
+    match pg().verified_stmt(
         "ALTER TABLE foo ADD CONSTRAINT bar FOREIGN KEY (baz) REFERENCES other(ref) NOT VALID",
     ) {
         Statement::AlterTable { operations, .. } => {